(subclass Hill LandForm) | Geography.kif 4043-4043 | Hill is a subclass of land form |
(subclass Hill UplandArea) | Geography.kif 4044-4044 | Hill is a subclass of upland area |
(subclass VolcanicCone Hill) | Geography.kif 4085-4085 | Volcanic cone is a subclass of hill |
(subclass Dune Hill) | Geography.kif 4385-4385 | Dune is a subclass of hill |